<!DOCTYPE html>
<html lang="en">

  <head>
    <meta charset="UTF-8">
    <meta name="viewport"
      content="width=device-width, initial-scale=1.0  minimum-scale=1.0, maximum-scale=1.0, user-scalable=no">
    <title>Document</title>
    <style>
      html,
      body {
        margin: 0;
        padding: 0;
        background: black;
        font-size: 13.3333333vw;
      }

      .canvas-map {
        display: block;
        width: 1200px;
        height: 720px;
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translate(-50%, -50%)
      }

    </style>
  </head>

  <body>
    <audio src="./res/bg.mp3" autoplay loop="true" oncanplay="this.volume=0.2"></audio>
  </body>

</html>
